I guess one good thing about catfish and it oft-used trade name basa, and probably tilapia too, is that they feed on vegetative matter so don't need to be fed other fish.

Some don't like the taste of these fish but that may be how they're treated pre-harvest (or to put it directly, killed). They should be put in clear water so the muck that causes the taste is purged from their system. I know carp is treated like that (or should be) so the muddy flavour goes away and I understand most Asian countries do the same. Maybe not so in the U.S. (big producer of catfish/basa since at least a few species are native).

Similarly, oysters in France are taken to inland settling ponds before harvest (not killed in this case but packaged for shipment to retailer/consumer). That has the benefit of letting the oyster purge themselves of various natural toxins. I know that isn't done for the local oysters where I am (got Norovirus just over 3 years ago and have not gone back to eating raw oysters since).